Method and apparatus for providing a stationary film record having sequentially displayable images

ABSTRACT

A projection means for stationary film record frame having a plurality of sequentially displayable images contained in the frame area for sequentially displaying a plurality of images may sequentially be displayed from the film record in a stationary position thereof. A plural lens array, with the number of lenses corresponding to the number of displayable images recorded on the frame, is provided, which, in conjunction with a rotatable shutter selectively displays the recorded images in sequential fashion. Means are provided, such as a conical wedge having a predetermined slope, for simultaneously varying the magnification of the plurality of lenses while maintaining the registration of each of the plurality of selectively displayable images with respect to a display surface for the selected single image. Such a stationary film record frame may be produced by a removable attachment for a camera which attachment contains a plural lens array and a controllable rotatable shutter which cooperates with the internal shutter of the camera so as to selectively expose the plurality of lenses one at a time while the camera shutter is open, each of the lenses being associated with a particular image record area on the stationary film record frame upon which the plurality of images is being recorded.

United States Patent [191 Liguori [4 1 Oct. 21, 1975 METHOD ANDAPPARATUS FOR PROVIDING A STATIONARY FILM RECORD HAVING SEQUENTIALLYDISPLAYABLE IMAGES [76] Inventor: Stephen A. Liguori, 100 EllsworthTerrace, Glen Rock, NJ. 07452 22 Filed: July 15,1974

21 Appl. No.: 488,745

Related US. Application Data [62] Division of Ser. No. 356,970, May 3,1973, Pat. No.

Primary ExaminerI-Iarry N. Haroian Attorney, Agent, or FirmI-Iubbell,Cohen and Stiefel POSITION l [57] ABSTRACT A projection means forstationary film record frame having a plurality of sequentiallydisplayable images contained in the frame area for sequentiallydisplaying a plurality of images may sequentially be displayed from thefilm record in a stationary position thereof. A plural lens array, withthe number of lenses corresponding to the number of displayable imagesrecorded on the frame, is provided, which, in conjunction with arotatable shutter selectively displays the recorded images in sequentialfashion. Means are provided, such as a conical wedge having apredetermined slope, for simultaneously varying the magnification of theplurality of lenses while maintaining the registration of each of theplurality of selectively dis playable images with respect to a displaysurface for the selected single image. Such a stationary film recordframe may be produced by a removable attachment for a camera whichattachment contains a plural lens array and a controllable rotatableshutter which cooperates with the internal shutter of the camera so asto selectively expose the plurality of lenses one at a time while thecamera shutter is open, each of the lenses being associated with aparticular image record area on the stationary film record frame uponwhich the plurality of images is being recorded.

17 Claims, 14 Drawing Figures US. Patent Oct. 21, 1975 Sheet 1 of33,914,038

POSITIONI POSITIONZJ :6 r (b go :42 (I'm- US. Patent Oct. 21, 1975 Sheet2 of3 3,914,038

REVERSIBLE flog VARIABLE SPEED MOTOR FIG. I0.

US. Patent 0a. 21, 1975 CAMERA CAMERA FIG. II.

Sheet 3 of 3 CAMERA REVOLVING SHUITER LENS rMOUNTING LENS MOTOR TOCAMERA TIMER METHOD AND APPARATUS FOR PROVIDING A STATIONARY FILM RECORDHAVING SEQUENTIALLY DISPLAYABLE IMAGES This a division, of appliclationSer. No. 356,970, filed May 3, 1973, now US. Pat. No. 3,858,974.

BACKGROUND OF THE INVENTION 1. Field of the Invention The presentinvention relates to stationary film records and methods and apparatusfor providing such a displayable stationary film record; moreparticularly, to such a stationary film record having sequentiallydisplayable images.

2. Description of the Prior Art Prior art devices and film records fordisplaying sequential images have been quite complex and costly. Forexample, some prior art devices utilize a slide having a plurality ofimages recorded thereon with each image having a different polarizationsuch as one image being polarized positive and the other displayableimage being polarized negative. These images are selectively displayedthrough a polarizing disc so as to select the positive or negativelypolarized image. However, each of the film records is quite costly andthe apparatus for displaying the film record is quite complex. Anexample of such an arrangement is disclosed in US. Pat. Nos. 3,561,859and 3,620,611. Another prior art attempt to provide a meaningfulsequential display of images is by the use of a motion picture projectorwhich takes the motion picture image and slows it down to three or fourframes per viewing interval. However, such a projector is quite costly.Other prior art attempts to provide sequential images such as byoverlays, have utilized a complicated arrangement to providesuperimposed images on the screen. Furthermore, these prior artarrangements all require the purchase of a special projection apparatusrather than a modification to an existing projector, such as via aremovable attachment, so that the existing projector can be utilized fornormal use or the special sequential display of images. Thus, applicantis presently unaware of any satisfactory prior art device for providinga stationary film record frame in which a plurality of images thereonmay be sequentially displayed in an efficient and economical manner.These disadvantages of the prior art are overcome by the presentinvention.

SUMMARY OF THE INVENTION A method and apparatus for providing astationary film record having sequentially displayable images isprovided. The film record frame has a predetermined displayable framearea and associated optical center for purposes of display. The framearea is divided into a plurality of contiguous image display areas, eachcontaining a distinct separately sequentially displayable image. Each ofthe image display areas is substantially equal in size and has adifferent distinct optical center for purposes of display of the imagecontained therein. The image display area optical centers areequidistant from the frame area optical center and the sequentiallydisplayable images each have substantially the same orientation withrespect to each other and the frame area optical center. The pluralityof images are sequential with respect to each other and separatelysequentially displayable from the film record while the film record isstationary for purposes of display whereby a plurality of images maysequentially be displayed from the film record in a stationary positionthereof. For projecting such a stationary film record so as tosequentially display the plurality of sequential images stored on thestationary film record, a projection lens array and a controllableshutter is provided. The projection lens array has a plurality ofprojection lenses with each of the lenses being associated with adifferent corresponding image display area. The plurality of lenses isequal in number to the plurality of image display areas with each of thelenses being capable of projecting an image from the associated imagedisplay area. The shutter means is interposable between the lens arrayand the film record and has an aperture therein substantially equal insize to one of the image dispaly areas and is selectively registerabletherewith. The shutter is capable of interposing an opaque mask betweenthe lens array and the other image display areas for selectivelypreventing the display of the image display areas other than the onewith which the aperture is selectively registerable. Means are alsoprovided for controllably rotating the shutter means for sequentiallyselectively varying the image display area with which the aperture isregisterable so as to provide the sequential display of the images fromthe stationary record. The lens array also comprises means forsimultaneously varying the magnification of the plurality of lensesand-maintaining the registration of each of the plurality of selectivelydisplayable images with respect to a display surface for the selectedsingle image. The lens array has a longitudinal axis with themagnification being varied by movement of the lens array with respect tothe stationary film record frame along the longitudinal axis which issubstantially normal to the frame area optical center. The magnificationvarying and registration maintaining means controllably simultaneouslytranslates the lenses in a direction toward or away from thelongitudinal axis so as to simultaneously translate the optical axesassociated with the lenses to a different predetermined positionsubstantially parallel to the longitudinal axis whereby the registrationof each of the selectively displayable images with respect to thedisplay surface is maintained as the magnification is varied by themovement of the lenses along the longitudinal axis. The stationary filmrecord frame may be provided by means of an attachment for a camera,which attachment comprises a plural lens array and an'associatedcontrollably rotatable shutter for selectively exposing one of thelenses of the array, the shutter being associated with the internalshutter of a camera so that the plural lenses are selectively exposedwhile the camera shutter is open. Each of the plural lenses isassociated with a particular image record area on the single film recordframe of the camera so that a timed exposure will produce a sequentialfilm record on the stationary film record frame. Such a stationary filmrecord frame may also be produced by providing a plurality of recordableimages on a mounting surface which is simultaneously photographed by acamera having a single film record frame which is exposed by such aphotograph or by providinga movie film containing a plurality ofsequentially recorded images which movie film is threaded so as toexpose a preselected assortment, such as every tenth frame, of thesequential images to a camera which simultaneously photographs thepreselected assortment to provide the stationary film record frame.

BRIEF DESCRIPTION OF DRAWING FIG. 1 is a diagrammatic illustration ofthe preferred display device for the preferred stationary film recordframe in the present invention;

FIG. 2 is a sectional view along line 22 of the arrangement shown inFIG. 1;

FIGS. 3 & 4 are diagrammatic illustrations of the preferred stationaryfilm record frame of the present invention;

FIG. 5 is a front view of a typical shutter disc for use with thepresent invention;

FIGS. 6 & 7 are diagrammatic illustrations of an alternative embodimentof a display device for the preferred stationary film record frame ofthe present invention;

FIGS. 8 & 9 are diagrammatic illustrations of still another alternativeembodiment of a display device for use with the preferred stationaryfilm record frame of the present invention;

FIG, 10 is a partial diagrammatic illustration of the display deviceshown in FIG. 1;

FIG. 11 is a diagrammatic illustration of the preferred method ofproviding a stationary film record frame of the present invention;

FIG. 12 isa diagrammatic illustration of an alternative method ofproviding the preferred stationary film record frame of the presentinvention;

FIG. 13 is a diagrammatic illustration, partially in block of thepreferred camera attachment for providing the stationary film recordframe of the present invention; and

FIG. 14 is a diagrammatic illustration of the front view of the cameraattachment of FIG. 13.

DETAILED DESCRIPTION OF TI-IEPREFERRED EMBODIMENTS Referring now to thedrawings in detail and especially to FIGS. 3 & 4, initially, thepreferred stationary film record frame generally referred to by thereference numeral is shown. This film record frame 20 may be atransparency, such as conventional 35 millimeter film utilized forproducing slides and displayable with, a conventional slide projector orone modified in the manner to be discussed in greater detailhereinafter, or may be an opaque film record frame of the typedisplayable with a conventional opaque projector, or a single frame of astrip film transparency which is displayable with a conventional stripfilm projector, or any other desired film record displayable with aconventional projection means therefor capable of being modified in themanner to be discussed in greater detail hereinafter. For purposes ofexplanation, it shall be assumed that the film record frame is atransparency displayable by a conventional slide projector although, itis of course understood, that the description is equally applicable toany of the other aforementioned types of film records, such as opaquefilm records.

Initially referring to FIG. 3, the film record frame 20 preferably has aconventional associated predetermined displayable frame area 22, whichin the example shown is a rectangular display area. This frame area 22has an associated optical center 24 for purposes of display. Preferably,as shown in FIG. 3, the frame area 22 is divided into a plurality ofcontiguous image display areas, four such areas 26, 28, 30 and 32 beingshown by way of example. Each ofthese areas preferably contains adistinct separately displayable image. Furthermore, each of these imagescontained in areas 26, 28, 30 and 32 is preferably a sequential imagewith respect to the other contiguous image display areas and, as will beexplained in greater detail hereinafter, is preferably separatelysequentially displayable. For purposes of explanation, it is assumedthat the images are sequentially displayable. For purposes ofexplanation, it is assumed that the images are sequentially arrangedclockwise starting with area 26, then area 28, then area 30 and finallyarea 32. In addition, each of the images contained in the respectiveimage display areas 26 through 32, in clusive, preferably has the sameorientation with respect to each other and with respect to the opticalcenter 24 of the frame area 22. Furthermore, each of the image displayareas 26 thorough 32, inclusive, is preferably substantially equal insize and has a different distinct optical center for purposes of displayof the image contained therein, these optical centers being respectivelyindicated by reference numerals 34, 36, 38and 40. The image display areaoptical centers 34 through 40, inclusive, are all preferably equidistantfrom the frame area optical center 24ras indicated by radius r1 in FIG.3. As will be explained in greater detail herein: after, the pluralityofimages contained in the image display areas 26 through 32, inclusive,are preferably separately sequentially displayable from the film record20 while the film record 20 is stationary for purposes of display sothat a plurality of images may sequentially be displayed from the filmrecord in a stationary position thereof. The associated optical centers34 through 40, inclusive, of the respective image display areas 26through 32, inclusive, are also each preferably equidistant from eachadjacent or contiguous image display area as indicated by the symbol d,in FIG. 3.

As shown and preferred in FIG. 3, each of the image display areas 26through 32, inclusive, preferably comprises the maximum size areaconfiguration of equal diametral dimension containable within an areasectional I segment of a maximum size circular area containable withinthe frame area 22. This maximum size circular area is illustrativelyindicated in FIG. 3 by the dashed line circle 42. In the example shownin FIG. 3, wherein preferably four segments of the frame area 22 areutilized, which is the preferred optimum for light effi;

ciency for the image, although any desired numberof segments may beutilized, the greater the number of segments the greater the permissiblemovement or number of overlays possible, as will be explained in.

greater detail hereinafter, the preferred configuration of the imagedisplay areas 26 through 32,inclusive, is I circular. Therefore, theimage display area 26 through 32, inclusive, is preferably the maximumsize circular area superimposable in the respective quadrant segment ofthe circle 42, each of the image display areas 26, through 32,inclusive, preferably being equal in diameter.

With respect to FIG. 4, an alternative embodiment of I tions. Thus,these image display areas 26a through 32a, inclusive, of FIG. 4preferably comprise the maximum size square area containable within thequadrant of the circular area 42a, each of the square areas 26a through32a, inclusive, preferably being equal in diametral dimension.Similarly, the associated optical centers 34a through 40a, inclusive, ofthe respective image display areas 26a through 32a, inclusive, are eachpreferably equidistant from the optical center 24 of the frame area 22as indicated by the symbol r2, as well as preferably being equidistantfrom the adjacent or contiguous image display area optical center asindicated by the notation d2 in FIG. 4. As was previously mentioned withrespect to FIG. 3, preferably the images contained in the image displayareas 26a through 32a, inclusive, each have the same orientation withrespect to each other and with respect to the frame area optical center24.

Referring now to FIGS. 11, 12, 13 and 14, various methods for producingthe stationary film record frame of FIGS. 3 and 4 shall be described,with the method illustrated in FIG. 11 being the presently preferredmethod. Referring now to FIG. 11, in order to produce the stationaryfilm record of FIG. 3 or 4, preferably the desired number of images,four being shown by way of example, are arranged on a mounting surface50, such as a display board, in the desired sequential fashion which, inthe example shown, is clockwise. These images are preferably located soas to be within the field of view of the lens of a conventional camera52 for producing the desired film record. In the example shown, it shallbe assumed that the desired film record is a slide transparency and theassociated camera is a conventional 35 millimeter slide camera. Mostpreferably, the images 26a through 32a are arranged so that they arearrayed on the mounting means 50 within the field of view of the camera52 so as to be contained in the maximum size area configuration of equaldiametral dimension containable within a sectional segment, in theexample shown this segment is a quadrant, of the maximum size imaginarycircular area containable within the frame area of the film record uponwhich the image is being recorded by means of camera 52. Thus, camera 52simultaneously photographs the plurality of images contained on themounting means 50 to produce the desired stationary film record. Itshould be noted, that preferably, the individual images placed on themounting means are preferably contained within whichever configurationcomplies with the desired image display area whether it be circular orrectangular configuration, whether it be circular or rectangular, andthese image areas are preferably located within the field of view of thelens so as to be in the proper location on the film record frame whenthe photograph is made.

Referring now to FIG. 12, an alternative method for producing thepreferred stationary film record frame 20 of FIGS. 3 and 4 is shown.Preferably, in the method illustrated in FIG. 12, the stationary filmrecord frame 20 is produced from a conventional movie film whichcontains a plurality of sequential images recorded thereon. Once again,it is assumed that the desired film record is a slide transparency andthe associated camera 52 is a conventional 35 millimeter slide camera.Preferably, the movie film is threaded over a mounting means whichpreferably comprises a plurality of mounting surfaces 54, 56, 58 and 60,four such surfaces being shown by way of example for producing astationary film record frame having four images. Preferably, thesemounting surfaces 54 through 60, inclusive, are all located within thefield of view of the lens of the camera 52 and are arrayed so as toplace the images mounted on these surfaces 54 through 60, inclusive,within the proper position of the film record frame upon which theimages are being recorded by camera 52, these positions being defined inthe discussion of FIGS. 3 and 4. Preferably, each mounting surface 54through 60, inclusive, only enables the mounting of one frame of themovie film 62 thereon, each movie film frame comprising an image.Preferably, every tenth frame, up to a total of four images in theexample shown, is mounted on the respective mounting surfaces 54 through60, inclusive, to provide the sequential images in the respectivesequential image display areas which are preferably arrayed clockwise insequential fashion as previously described with reference to FIGS. 3 and4. The camera 52 then simultaneously photographs the four imagescontained on the mounting surfaces 54 through 60, inclusive, which havebeen arranged in the proper orientation to produce the stationary filmrecord frame 20.

Referring now to FIGS. 13 and 14, another alternative method andapparatus for producing the preferred stationary film record frame 20 ofthe present invention is shown. Preferably, as will be described ingreater detail hereinafter, the stationary film record frame may beproduced by taking a photograph of a dynamic realtime event, such as abird in flight, with a conventional 35 millimeter slide camera 52, suchas a single lens reflex camera, utilizing the following describedpreferred attachment 63 in lieu of a conventional lens. Mostconventional 35 millimeter cameras 52 have a lens mounting 64 in whichany one of a number of special effect lenses may be removably mounted,such as a telephoto lense or a wide angel lens, if desired. Thepreferred attachment 63 preferably consists of an arrangement which isremovably mountable on this conventional lens mounting 64, such as byconventional threads. As is well known, the conventional 35 millimetercamera 52 preferably includes a shutter and a timer for controlling theshutter so thata timed exposure of a picture may be niade. Theattachment 63 preferably includes a plurality of lenses 66, 68, and 72,four such lenses being shown by way of example, which are each arrangedwith their respective optical axis aligned with the area of thestationary film record frame contained within the 35 millimeter camera52 which represents the optical center of the respective associatedimage display area 26 through 32, or 26a through 32a, inclusive,respectively. These lenses 66 through 72, inclusive, are preferablymounted with their respective optical centers equidistant from theoptical center of the lens housing 74, which center is aligned with theoptical center 24 of the stationary film record frame 20 containedwithin the camera 52, as indicated by the notation r3, as well as beingequidistant from the optical center of the adjacent lens, as indicatedby the notation d3. If desired, a translation means may be provided forlaterally translating these lenses as the image is focused in the mannerto be described in greater detail with respect to FIGS. 1, 2, 6, 7, 8,9, 10. As shown and preferred, a revolving shutter 76 is preferablylocated between the lens mounting 64 and the lens array 66 through 72,inclusive, which places this shutter 76 between the internal shutter ofthe camera 52 and the lens array 66 through 72. inclusive. Preferably,this revolving shutter 76 is opaque except for an aperture therein whichsequentially exposes one of the lenses of the array 66 through 72,inclusive, at a time to the internal shutter of the camera 52. Aconventional motor 78, such as a conventional dc motor, such as avariable speed motor, is preferably provided to drive the revolvingshutter 76. This motor is preferably operatively connected to theinternal camera timer of camera 52 so as to be turned on and off by thiscamera timer. Thus, the timing mechanism is arranged so that during theinterval while the internal shutter of the camera 52 is maintained open,such as for a timed exposure, the revolving shutter 76 completes onerevolution so as to sequentially expose each of the lenses 66 through72, inclusive, to the stationary film record frame during this timedexposure. In this manner, during the timed exposure, a plurality ofimages equal to the number of lenses, in this instance four, is providedon the stationary film record frame, each of these images beingsequential due to the time differential between the exposure of eachlens over the timed exposure interval. As was previously mentioned,these lenses 66 through 72, inclusive, are preferably arranged so as toexpose the desired portion of the frame record area, as previouslydescribed with reference to FIGS. 3 and 4.

Now referring to FIGS. 1, 2, 5 and 10, the preferred projectionapparatus, generally indicated by the reference numeral 100, forsequentially displaying the preferred stationary film record frame ofthe present invention, such as illustrated in FIGS. 3 and 4, shall bedescribed. As was previously mentioned, for purposes of explanation, itshall be assumed that the stationary film record frame is a slide filmtransparency and, accordingly, the projection apparatus 100 ispreferably a conventional slide film projector except for themodifications to be described in greater detail hereinafter. Theprojector 100, as shown in FIG. 1, preferably includes a conventionalprojection lamp assembly 102 and a mounting for the slide to bedisplayed, in the example given the slide 20 being replaced by thepreferred stationary film record frame 20, such as the type describedwith reference to FIGS. 3 and 4, for producing a sequentiallydisplayable plurality of images from the stationary film record frame ina stationary position thereof. As shown and preferred in FIG. 1, thepreferred sequential display lens-shutter apparatus 104 to be describedin greater detail hereinafter, is substituted for the conventional lensassembly of the slide projector 100. If desired, this preferred assembly104 could be an integral portion of the slide projector 100, beingfixedly mounted therein in place of the conventional lens assembly, orcould be a removable attachment for the slide projector 100 whichreplaces the conventional supplied lens assembly which is removed fromthe slide projector during the timing when this attachment 104 isbeingutilized. In such an instance, the slide projector 100 may also beutilized as a conventional slide projector to display conventionalslides with the conventional lens assembly and as a sequential imageprojector for use with the preferred stationary film records 20 when thepreferred attachment 104 replaces the conventional lens assembly.

Preferably, the preferred attachment 104 includes a revolving orrotatable shutter 106, illustrated in more detail in FIG. 5, which ispreferably opaque except for a transparent aperture which corresponds toone segment of the preferred plurality of segments contained on thestationary film record frame 20. In the example shown, since thestationary film record frame contains four quadrants, this transparentarea 108 preferably 5 consists of one quadrant. The revolving shutter106 is preferably driven by a conventional variable speed motor 109,such as a reversible variable speed dc motor, through appropriateconventional gearing 110-112, such as gear teeth 110 being located onthe drive shaft of the motor 109 and gear teeth 112 being located on theperiphery of the shutter 106. The revolving shutter 106 is preferablyrotatably mounted on a shaft which is aligned with the longitudinal axis114 of the projector 100, the stationary film record 20 preferablyhaving its optical center 24 also alignedwith this longitudinal axis114.

AS shown and preferred in FIGS. 1, 2, and 10, the y j a preferredattachment 104 also preferably includes a projection lens array,generally referred to by the reference numeral 116, preferablycomprising a cylindrical lens housing 118 containing a plurality ofprojection lenses, four such projection lenses 120, 122, 124 and 126being shown by way of example, each lens of the' plurality of projectionlenses 120 through 126, inclu- 25 display areas 26 through 32,inclusive. Each of the lenses 120 through 126, inclusive, is capable ofprojecting an image from its associated image display area.

Preferably, the lens housing 118, and accordingly, the

30 plurality of lenses 120 through 126, inclusive, mounted therein aremovable along the longitudinal axis 114 in so as to focus the images,the associated magnification.

of the lenses varies in conventional fashion. Accordingly, means arealso preferably provided for maintaining the registration of each of theplurality ofselectively displayable images with respect to the displaysurface or screen 132 for a selected single image while simultaneouslyvarying the magnification of the plural-1 ity of lenses 120 through 126,inclusive, the magnificaframe 20 along the longitudinal axes I M. Aspreviously mentioned, longitudinal axis 114 is substantially normal tothe frame area optical center 24.

As was also previously mentioned, the rotatable sh utter 106 isinterposable between the lens array 116 and I the film record 20 andcontains the aperture 108 which is preferably equal in ,size to one ofthe image display areas 26 through 32, inclusive, and is selectivelyregis-. terable therewith so as to interpose an opaque mask between thelens array 116 and the otherimage display areas other than the one withaperture 108 is selectively registerable. Motor 109 controls therotation of the shutter 106 so as to sequentially selectively vary theimage display area with which aperture 108 is registerable so as toprovide a sequential display of the images from the stationary filmrecord 20.

As shown and preferred in FIG. 2, the lens housing sive, beingassociated with a particular one of the image tion of the lenses beingvaried by movement of the lens array 116 with respect to the stationaryfilm record force. Preferably one such spring is associated with each ofthe lenses 120 through 126, inclusive, these springs being givenreference numerals I40. 142, 144 and 146. respectively with theassociated biasing force direction being indicated by arrows 148, 150,152 and 154, respectively. The lenses 120 through 126, inclusive, arepreferably arrayed about the longitudinal axis 114 along respectiveoptical axes which are associated therewith which are preferablysubstantially parallel to the longitudinal axis 1 14 with eachassociated lens 120 through 126, inclusive, optical axis substantiallyintersecting the respective image display area optical center of thecorresponding image display area 26 through 32, inclusive, respectively,at one predetermined limit position of magnification for thecorresponding lens, the lens being maintainable in this position by thebiasing springs 140 through 146, inclusive. This position is illustratedin FIGS. 1 and 2 and is labeled position 2" in FIG. 1. At this positionof the lenses, the magnification is at a predetermined minimum, such as10, and is the position with the lenses closest to the screen andfurthest from the object 20.

As also shown and preferred in FIGS. 1, 2 and 10, the preferredattachment 104 also preferably includes means for controllablyovercoming the biasing force provided by the springs 140 through 146,inclusive, to simultaneously translate all of the lenses 120 through126, inclusive, in a direction away from the longitudinal axis 114 so asto simultaneously translate the optical axes associated with the lenses120 through 126, inclusive, to a different predetermined positionsubstantially paralell to the longitudinal axis 114 and away from theintersection with the corresponding image display area optical centers34 through 40, inclusive, while maintaining the stationary film recordframe in a stationary position so that registration of each of theselectively displayable images contained in image display areas 26through 32, inclusive, is maintained with respect to the display surfaceor screen 132. As shown and preferred in FIGS. 1, 2 and 10, a conicalwedge 160 having a base 162 and an apex 164 is provided with the base162 being disposed in a direction closest to the film record frame 20and the longitudinal axis of the wedge 160 being disposed along thelongitudinal axis 114 of the projector 100. The conical wedge 160preferably has a predetermined slope between the base 162 thereof andthe apex 164 thereof corresponding to a predetermined amount of lenstranslation required to simultaneously maintain the registration of eachof the selectively displayable images with respect to the displaysurface 132 while the magnification of the lenses is varied. The lenses120 through 126, inclusive, are preferably biased by the springs 140through 146, inclusive, against the conical wedge 160 outer surface sothat the translation of the lenses determinable when they are biasedagainst the portion of the wedge closest to the base end 162 is atanother predetermined limit position of magnification for thecorresponding lenses while the translation of the lenses determinanblewhen they are biased against the portion of the wedge closest to theapex end 164 are at the first mentioned predetermined limit position oflens magnification. These two limit positions are indicated in FIG. 1 asposition 1 and position 2", with the maximum magnification beingprovided at position 1 wherein the ,lenses are closest to the object 20and furthest from the screen 132, such as a magnification of 100 atposition 1" versus a magnification of 10 at position 2". As shown andpreferred, the conical wedge 160 preferably has an associated radiusabout the longitudinal axis 114 which varies along the longitudinal axis114 with the associated wedge radius at position 2" being less than theassociated wedge radius at position 1''. Each of the lenses through 126,inclusive, are preferably equal in lens diameter with the lenses beingadjacent to each other about the wedge at position 2, as illustrated inFIG. 2, and being spaced apart from each other at position 1", asillustrated in FIG. 1. The slope of the wedge outer surface ispreferably defined by an angle of intersection 0 (FIG. 10) between theouter surface 170 of the wedge against which the lenses are biased andthe longitudinal axis 114. The stationary film record 20, as shown andpreferred, has one predetermined distance from the lenses at position 2and a different distance from the lenses at position 1, the same beingtrue for the distance between the lenses and the display surface 132where the image appears. The angle 0 has a tangent which is preferablydefined by the sum of the wedge radius at position 2" and the radius ofa single lens 120 with that sum divided by the distance between theobject or slide 20 and the lens 120 in position 2. Summarizing thisdiscussion, assuming u equals the distance of the object 20 from thelens 120, v equals the distance of the image 132 from the lens 120,fequals the focal length of the lens and M equals the magnification, ucan be calculated based on the relationship that u equals f(M+l )/M atboth position 1 for one magnification and position 2 for the othermagnification. The difference of these two values of u is the distancebetween the two extreme positions for the different limits ofmagnification. Then, known tangent 0 and this distance between the twoextreme positions, the total vertical motion of the lenses or lateraltranslation thereof as indicated by the arrows in FIG. 10, can becalculated by multiplying tangent 6 by twice the distance between theexxtremes. This total vertical motion determines the preferred maximumradius of the conical wedge. To determine the preferred minimum radiusof the conical wedge 160, knowing the lens size, in the case of fourlenses by way of example, it is assumed that the lenses preferably touchat position 2. Referring now to FIG. 2, assuming the radius of each ofthe individual lenses is defined by the symbol r, the distance or radiusfrom the longitudinal axis 114 which is congruent with the longitudinalaxis of the wedge 160 and the optical center of the individual lens 120is defined by the symbol R, and the angle between a pair of suchadjacent distances R is defined by the symbol 4) this distance R isequivalent to Z r sin (in, where equals 45 in the example shown.Accordingly, the preferred minimum wedge 160 radius is obtained bysubtracting r from R. This provides the preferred minimum wedge radiusand the preferred maximum wedge radius required to provide the desiredslope to maintain the registration of each of the selectivelydisplayable images with respect to the display surface 132 as themagnification is varied by movement of the lens along the longitudinalaxis 114. As shown and preferred, the wedge 160 is maintained stationaryand the lens housing 118 is moved along the longitudinal axis, with thelenses 120 through 126, inclusive, moving up and down the slope of thewedge 160 due to this longitudinal movement and the lateral pressureapplied by the biasing springs 140 through 146, inclusive. Preferably,the wedge 160 is fixedly mounted to the attachment 104 housing. Thus, asthe magnification of the lens is varied, the lens is laterally displacedfrom the optical center of its associated image display area so as tomaintain the registration of the image display area on the displaysurface 132, this preferably occurring simultaneously for all of thelenses and all of the associated image display areas.

Referring now to FIGS. 6 and 7, an alternative embodiment forsimultaneously maintaining the registration of each of the selectivelydisplayable images with respect to the display surface 132 while thelens magnification is. varied is shown. Specifically, in place of theconical wedge 160 located along the longitudinal axis 114, a pluralityof triangular wedges are provided, one such wedge preferably beingprovided for each of the lenses, four such wedges 200, 202, 204 and 206being utilized in the example shown for four lenses. The slope of eachof the triangular wedges 200 through 206, respectively, is preferablycalculated in the same manner as discussed above with respect to theslope of the conical wedge of FIG. 1, the angle 6 in this instance beingdefined as the angle between the hypotenuse 210 of the wedge and thebase 212 (FIG. 6) of the particular wedge 200 through 206, inclusive,the slope being defined as the slope of the hypotenuse 210. Furthermore,biasing means or springs radially bias the lenses 120 through 126,inclusive, outwardly against the hypotenuse 210 surfaces of therespective associated triangu lar wedges 200 through 206, inclusive,these springs being given reference numerals 216, 218, 220 and 222,respectively, with their associated biasing force direction beingindicated by the arrows 224, 226, 228, and 230, respectively. As in theprevious discussion with reference to the conical wedge 160 illustratedin FIGS. 1, 2 and 10, the triangular wedges 200 through 206, inclusive,are oriented so that the lenses 120 through 126, inclusive, are closesttogether laterally, preferably touching, when they are longitudinallyclosest to the display surface 132 and furthest from the object 20. Asshown and preferred in FIGS. 6 and 7, the biasing means or springs 216through 222, inclusive, bias the lenses 120 through 126, inclusive, soas to maintain the lenses in a position equivalent to position 1 of FIG.1 which is preferably the position of maximum magnification for thelenses.

Referring now to FIGS. 8 and 9, still another alternative embodiment ofa means for, maintaining registration of each of the selectivelydisplayable images with respect to the display surface 132 while themagnifica tion of the lenses is varied due to their longitudinalmovement in the direction of the longitudinal axis 114 is shown.Specifically, this arrangement comprises the use of bell crank leversphysically connected to the lens housing 118 by a pivotal connection andbearing against a fixed push plate 300 so as to cause the bell cranklevers to pivot about their respective pivot points. Four such bellcrank levers 302, 304, 306 and 308 are shown by way of example, one bellcrank lever preferably being associated with each of the four lenses120, 122, 124 and 126, respectively. The individual lenses 120 through126, inclusive, are preferably biased against the inner surface of thebell crank levers 302 through 308, inclusive, respectively associatedtherewith by biasing springs, such as springs 216, 218, 220 and 222previously described with reference to FIG. 7. Preferably, the desiredpath of movement of the contact surface of bell crank levers 302 through308, inclusive, corresponds to the slope of the conical wedge previouslydescribed with reference to FIG.1 so as to provide the same amountoflens translation required to simultaneously maintain registration ofeach of the selectively displayable images with respect to thedisplaysurface 132 while the magnification of the lenses is varied bylongitudinal movement of the. lenses in a direction along thelongitudinal axis 114. Displacement of the bell crank levers 302 through308 is preferably effectuated by pressure of the respective leversagainst the push plate as the lens housing 118 is longitudinally variedso as to cause the bell crank levers to pivot about their respectivepivot points, such as pivot points 310 and 312 for levers 302 and 304,respectively.

By utilizing the improvedmethod and apparatus of the present invention,a plurality ofimages may se-v quentially be displayed from a film recordin a stationary position thereof so as to provide, by way of example, ananimated type of projection from a stationary film record in astationary position thereof ora sequential presentation of overlays forinstructional purposes if desired. Many other usues of the stationaryfilm records of the present invention will become readily apparent toone of ordinary skill in the art.

It is to be understoodthat the above described em. bodiments of theinvention are merely illustrative of the principles thereof and thatnumerous modifications and embodiments of the invention may be derivedwithin the spirit and scope thereof.

What is claimed is:

1. An attachment for a stationary film record projection means capableof sequentially displaying a plurality of sequential images stored onsaid stationary film. record in contiguous substantially equisize imagedis-.

play areas which are all contained within a single frame area of saidfilm record which is divisible into said, image display areas and has anassociated initial optical. center for purposes of said display, witheachof said.

image display areas having a different distinct associ,-; ated initialoptical center for purposes of said display which are each equidistantfrom said frame area initial optical center, said sequentiallydisplayable images each having substantially the same orientation withre-,

spect to each other and said frame area optical center; said attachmentcomprising a projection lens array having a plurality of projectionlenses, each of said projection lenses of said plurality being alignedwith a differ.-

ent corresponding image display area, said plurality of lenses beingequal in number to saidplurality of image display areas, each of saidlenses being capable of projecting a image from said associated imagedisplay area; a controllably rotatable shutter means interposablebetween said lens array and said film record, said shutter, means havingan aperture therein substantially equal in 1 size to one of said imagedisplay areas and being selectively registerable therewith, said shuttermeans further being capable of interposing an opaque mask between saidlens array and said other image display areas for selectively preventingthe display of said image display areas other than the one with whichsaid aperture is selectively registerable; and means for controllablyrotating said shutter means for sequentially selectively varying theimage display area with which said aperture is registerable so as toprovide said sequential display of said images from said stationaryrecord; said lensarray further comprising means for simultaneouslyvarying the magnification of said plurality of lenses and maintainingthe registration of each of the plurality of selectively displayableimages with respect to a display surface for said selected single image,said lens array having a longitudinal axis, with said magnificationbeing varied by movement of said lens array with respect to saidstationary film record frame along said longitudinal axis, saidlongitudinal axis being substantially normal to said frame area opticalcenter, said magnification varying and registration maintaining meanscom prising means for substantially equally biasing said lenses in adirection relative to said longitudinal axis with a predeterminedbiasing force, said lenses being arranged about said longitudinal axisalong optical axes associated therewith which are substantially parallelto said longitudinal axis, said lens optical axis substantiallyintersecting the image display area optical center of the correspondingimage display area at a predetermined position of magnification for thecorresponding lens and being maintainable in at least said position andvariable therefrom to vary said magnification to another maintainableposition thereof, whereby a plurality of sequential images maysequentially be displayed from said film record frame in a stationaryposition thereof.

2. An attachment in accordance with claim 1 wherein said lenses biasingmeans comprises means for equally biasing said lenses in a directiontoward said longitudinal axis with a predetermined biasing force, saidlens optical axis substantially intersecting the image display areaoptical center of the corresponding image display area at onepredetermined limit position of magnification for the corresponding lensand being maintainable in said position by said biasing means.

3. An attachment in accordance with claim 2 wherein said magnificationvarying and registration maintaining means further comprises means forcontrollably overcoming said biasing force for simultaneouslytranslating said lenses in a direction away from said longitudinal axisso as to simultaneously translate said optical axes associated with saidlenses to a different predetermined position substantially parallel tosaid longitudinal axis and away from said intersection with thecorresponding image display area optical center while maintaining saidstationary film record frame in a stationary position, whereby saidregistration of each of said selectively displayable images with respectto said display surface is maintained.

4. An attachment in accordance with claim 3 wherein said biasing forceovercoming means comprises a conical wedge having a base and an apex anda longitudinal I axis with said lenses disposed about said conical wedgeand with said base disposed in the direction of said film record frameoptical center, said conical wedge having a predetermined slope betweenthe base thereof and the apex thereof corresponding to a predetermined5. An attachment in accordance with claim 4 wherein said onepredetermined limit position of said lens magnification is a minimumselected magnification for said lens and said other predetermined limitposition is a maximum selected magnification for said lens, said conicalwedge having an associated radius about said longitudinal axis whichvaries along said longitudinal axis, said associated wedge radius variesalong said longitudinal axis, said associated wedge radius at said onepredetermined limit position being less than said associated wedgeradius at said other predetermined limit position, said lenses eachhaving an associated lens diameter, said diameters being equal, saidlenses being adjacent each other about said wedge at said onepredetermined limit position, said wedge slope being defined by an angleof intersection between an outer surface of said wedge against whichsaid lenses are biased and said longitudinal axis, said stationary filmrecord having a first distance from said lens at said one predeterminedlimit position and a second distance from said lens at said otherpredetermined limit position, said angle having a tangent defined by thesum of the wedge radius of said lens with said sum divided by said firstdistance.

6. An attachment in accordance with claim 4 wherein said lens array isbiased radially with respect to said longitudinal axis, by said wedge assaid lens array moves along said longitudinal axis to vary saidmagnification while said wedge is stationary with respect to saidstationary film record.

7. An attachment in accordance with claim 1 wherein said lenses biasingmeans comprises means for equally biasing said lenses in a directionaway from said longitudinal axis with a predetermined biasing force,said lens optical axis substantially intersecting the image display areaoptical center of the corresponding image display area at onepredetermined limit position of magnification for the corresponding lensand being biased towards another predetermined limit position ofmagnification for the corresponding lens by said biasing means.

8. An attachment in accordance with claim 7 wherein said magnificationvarying and registration maintaining means further comprises means forcontrollably overcoming said biasing force for simultaneouslytranslating said lenses in a direction toward said longitudinal axis soas to simultaneously translate said optical axes associated withsaid'lenses from their position at said other predetermined positiontoward a different position at said one predetermined limit positionwith said optical axes being substantially parallel to said longitudinalaxis and with said stationary film record frame in a stationaryposition, whereby said registration of each of said selectively,displayable images with respect to said display surface is maintained.

9. An attachmentin accordance with claim 8 wherein said biasing forceovercoming means comprises an inclined surface area with respect to saidlongitudinal axis against which inclined surface area said lenses arebiased by said biasing means, said inclined surface area having apredetermined slope corresponding to a predetermined amount of said lenstranslation required to simultaneously maintain said registration whilesaid magnification is varied.

10. An attachment in accordance with claim 8 wherein said biasing forceovercoming means comprises a bell crank means against which said lensesare biased by said biasing means, said bell crank means having apredetermined path of movement corresponding to a predetermined amountof said lens translation required to simultaneously maintain saidregistration while said magnification is varied.

11. An attachment in accordance with claim 3 wherein said biasing forceovercoming means comprises a bell crank means against which said lensesare biased by said biasing means, said bellcrank means having apredetermined path of movement correspond ing to a predetermined amountof said lens translation required to simultaneously maintain saidregistration while said magnification is varied.

12. In a stationary film record projection means for projecting an imagestored on a stationary film record on to a display surface, theimprovement comprising means capable of sequentially displaying aplurality of sequential images stored on said stationary film record incontiguous substantially equisize image display areas which are allcontained within a single frame area of said film record which isdivisible into said image display areas and has an associated initialoptical center for purposes of said display, with each of said imagedisplay areas having a different distinct associated initial opticalcenter for purposes of said display which are each equidistant from saidframe area initial optical center, said sequentially displayable imageseach having substantially the same orientation with respect to eachother and said frame area optical center; said means capable ofsequentially displaying a plurality of sequential images stored on saidstationary film record compising a projection lens array having aplurality of projection lenses, each of said projection lenses of saidplurality being aligned with a different corresponding image displayarea, said plurality of lenses being equal in number to said pluralityof image display areas, each of said lenses being capable of projectingan image from said associated image display area; a controllablyrotatable shutter means interposable between said lens array and saidfilm record, said shutter means having an aperture therein substantiallyequal in size to one of said image display areas and being selectivelyregisterable therewith, said shutter means further being capable ofinterposing an opaque mask between said lens array and said other imagedisplay areas for selectively preventing the display of said imagedisplay areas other than the one with which said aperture is selectivelyregisterable; and means for controllably rotating said shutter means forsequentially selectively varying the image display area with which saidaperture is registerable so as to provide said sequential display ofsaid images from said stationary record; said lens array furthercomprising means for simultaneously varying the magnification of saidplurality oflenses and maintaining the registration of each of theplurality of selectively displayable images with respect to a displaysurface for said selected single image, said lens array having alongitudinal axis with said magnification being varied by movement ofsaid lens array with respect to said stationary film record frame alongsaid longitudinal axis, said longitudinal axis being substantiallynormal to said frame area optical center, said magnification varying andregistration maintaining means comprising means for substantiallyequally biasing said lenses in a direction relative to said longitudinalaxis with a predetermined biasing force, said lenses being arrayed aboutsaid longitudinal axis along optical axes associated therewith which aresubstantially parallel to said longitudinal axis, said lens optical axissubstantially inter:

secting the image display area optical center of the corresponding imagedisplay area at a predetermined position of magnification for thecorresponding lens and being maintainable in at least said position andvariable therefrom to vary said magnification to another maintainableposition thereof, whereby a plurality of sequential images maysequentially be displayed from said film record frame in a stationaryposition thereof. 13. A projection means in accordance with claim 12wherein said lenses biasing means comprises means for equally biasingsaid lenses in a direction toward said longitudinal axis with apredetermined biasing force, said lens optical axis substantiallyintersecting the image display area optical center of the corresponding1 image display area at one predetermined limit position ofmagnification for the corresponding lens and being maintainable in saidposition by said biasing means.

14. A projection means in accordance with claim 13 wherein saidmagnification varying and registration maintaining means furthercomprises means for controllably overcoming said biasing force forsimultaneously translating said lenses in a direction away from saidlongitudinal axis so as to simultaneously translate said optical axesassociated with said lenses to a different predetermined positionsubstantially parallel to said longitudinal axis and away from saidintersection with the corresponding image display area optical centerwhile maintaining said stationary film record frame in a stationaryposition, whereby said registration of each of said selectivelydisplayable images with respect to' said display surface is maintained.

15. A projection means in accordance with claim 14 wherein said biasingforce overcoming means comprises a conical wedge having a base and anapex and a longitudinal axis disposable along said lens arraylongitudinal axis with said lenses disposed about said conical wedge andwith said apex disposed in the direction of said film record frameoptical center, said conical wedge having a predeterminedslope betweenthe base thereof and the apex thereof corresponding to a predeterminedamount of said lens translation requiredto simultaneously maintain saidregistration while said mag nification is varied, said lenses beingbiased against said conical wedge, the translation of said lensesdeterminable when biased against said base end of said wedge being atanother predetermined limit position of magnification for saidcorresponding lenses while the translation of said lenses determinablewhen biased against said apex end of said wedge being at said onepredetermined limit position of said lens magnification.

16. A projection means in accordance with claim 15 wherein said onepredetermined limit position of said lens magnification is a minimumselected magnification for said lens and said other predetermined limitposition is a maximum selected magnification for said lens, said conicalwedge having an associated radius about said longitudinal axis whichvaries along said longitudinal axis, said associated wedge radius atsaid one predetermined limit position being less than said associatedwedge radius at said other predetermined limit position said lenses eachhaving an associated lens diameter, said diameter being equal, saidlenses being adjacent each other about said wedge at said onepredetermined limit position and spaced apart from each other as saidother predetermined limit position, said. wedge slope 17 18 beingdefined by an angle of intersection between an 17. A projection means inaccordance with claim 15 Outer Surface of Said Wedge against which Saidlenses wherein said lens array is biased radially with respect arebiased and said longitudinal axis, said stationary film record having afirst distance from said lens at said one predetermined limit position,said angle having a 7 alol'lg Sal?! ionglmdlnal i to d magnifitangemdefined by the sum of the wedge radius at Said cation while said wedge18 stationary with respect to one predetermined limit position and theradius of said Said Stationary film recordlens with said sum divided bysaid first distance.

to said longitudinal axis by said wedge as said lens array

1. An attachment for a stationary film record projection means capableof sequentially displaying a plurality of sequential images stored onsaid stationary film record in contiguous substantially equisize imagedisplay areas which are all contained within a single frame area of saidfilm record which is divisible into said image display areas and has anassociated initial optical center for purposes of said display, witheach of said image display areas having a different distinct associatedinitial optical center for purposes of said display which are eachequidistant from said frame area initial optical center, saidsequentially displayable images each having substantially the sameorientation with respect to each other and said frame area opticalcenter; said attachment comprising a projection lens array having aplurality of projection lenses, each of said projection lenses of saidplurality being aligned with a different corresponding image displayarea, said plurality of lenses being equal in number to said pluralityof image display areas, each of said lenses being capable of projectinga image from said associated image display area; a controllablyrotatable shutter means interposable between said lens array and saidfilm record, said shutter means having an aperture therein substantiallyequal in size to one of said image display areas and being selectivelyregisterable therewith, said shUtter means further being capable ofinterposing an opaque mask between said lens array and said other imagedisplay areas for selectively preventing the display of said imagedisplay areas other than the one with which said aperture is selectivelyregisterable; and means for controllably rotating said shutter means forsequentially selectively varying the image display area with which saidaperture is registerable so as to provide said sequential display ofsaid images from said stationary record; said lens array furthercomprising means for simultaneously varying the magnification of saidplurality of lenses and maintaining the registration of each of theplurality of selectively displayable images with respect to a displaysurface for said selected single image, said lens array having alongitudinal axis, with said magnification being varied by movement ofsaid lens array with respect to said stationary film record frame alongsaid longitudinal axis, said longitudinal axis being substantiallynormal to said frame area optical center, said magnification varying andregistration maintaining means comprising means for substantiallyequally biasing said lenses in a direction relative to said longitudinalaxis with a predetermined biasing force, said lenses being arrangedabout said longitudinal axis along optical axes associated therewithwhich are substantially parallel to said longitudinal axis, said lensoptical axis substantially intersecting the image display area opticalcenter of the corresponding image display area at a predeterminedposition of magnification for the corresponding lens and beingmaintainable in at least said position and variable therefrom to varysaid magnification to another maintainable position thereof, whereby aplurality of sequential images may sequentially be displayed from saidfilm record frame in a stationary position thereof.
 2. An attachment inaccordance with claim 1 wherein said lenses biasing means comprisesmeans for equally biasing said lenses in a direction toward saidlongitudinal axis with a predetermined biasing force, said lens opticalaxis substantially intersecting the image display area optical center ofthe corresponding image display area at one predetermined limit positionof magnification for the corresponding lens and being maintainable insaid position by said biasing means.
 3. An attachment in accordance withclaim 2 wherein said magnification varying and registration maintainingmeans further comprises means for controllably overcoming said biasingforce for simultaneously translating said lenses in a direction awayfrom said longitudinal axis so as to simultaneously translate saidoptical axes associated with said lenses to a different predeterminedposition substantially parallel to said longitudinal axis and away fromsaid intersection with the corresponding image display area opticalcenter while maintaining said stationary film record frame in astationary position, whereby said registration of each of saidselectively displayable images with respect to said display surface ismaintained.
 4. An attachment in accordance with claim 3 wherein saidbiasing force overcoming means comprises a conical wedge having a baseand an apex and a longitudinal axis with said lenses disposed about saidconical wedge and with said base disposed in the direction of said filmrecord frame optical center, said conical wedge having a predeterminedslope between the base thereof and the apex thereof corresponding to apredetermined amount of said lens translation required to simultaneouslymaintain said registration while said magnification is varied, saidlenses being biased against said conical wedge, the translation of saidlenses determinable when biased against said base end of said wedgebeing at another predetermined limit position of magnification for saidcorresponding lenses while the translation of said lenses determinablewhen biased against said apex end of said wedge being at said onepredetermined limit position of said lens magnification.
 5. Anattachment in accordance with claim 4 wherein said one predeterminedlimit position of said lens magnification is a minimum selectedmagnification for said lens and said other predetermined limit positionis a maximum selected magnification for said lens, said conical wedgehaving an associated radius about said longitudinal axis which variesalong said longitudinal axis, said associated wedge radius varies alongsaid longitudinal axis, said associated wedge radius at said onepredetermined limit position being less than said associated wedgeradius at said other predetermined limit position, said lenses eachhaving an associated lens diameter, said diameters being equal, saidlenses being adjacent each other about said wedge at said onepredetermined limit position, said wedge slope being defined by an angleof intersection between an outer surface of said wedge against whichsaid lenses are biased and said longitudinal axis, said stationary filmrecord having a first distance from said lens at said one predeterminedlimit position and a second distance from said lens at said otherpredetermined limit position, said angle having a tangent defined by thesum of the wedge radius of said lens with said sum divided by said firstdistance.
 6. An attachment in accordance with claim 4 wherein said lensarray is biased radially with respect to said longitudinal axis, by saidwedge as said lens array moves along said longitudinal axis to vary saidmagnification while said wedge is stationary with respect to saidstationary film record.
 7. An attachment in accordance with claim 1wherein said lenses biasing means comprises means for equally biasingsaid lenses in a direction away from said longitudinal axis with apredetermined biasing force, said lens optical axis substantiallyintersecting the image display area optical center of the correspondingimage display area at one predetermined limit position of magnificationfor the corresponding lens and being biased towards anotherpredetermined limit position of magnification for the corresponding lensby said biasing means.
 8. An attachment in accordance with claim 7wherein said magnification varying and registration maintaining meansfurther comprises means for controllably overcoming said biasing forcefor simultaneously translating said lenses in a direction toward saidlongitudinal axis so as to simultaneously translate said optical axesassociated with said lenses from their position at said otherpredetermined position toward a different position at said onepredetermined limit position with said optical axes being substantiallyparallel to said longitudinal axis and with said stationary film recordframe in a stationary position, whereby said registration of each ofsaid selectively displayable images with respect to said display surfaceis maintained.
 9. An attachment in accordance with claim 8 wherein saidbiasing force overcoming means comprises an inclined surface area withrespect to said longitudinal axis against which inclined surface areasaid lenses are biased by said biasing means, said inclined surface areahaving a predetermined slope corresponding to a predetermined amount ofsaid lens translation required to simultaneously maintain saidregistration while said magnification is varied.
 10. An attachment inaccordance with claim 8 wherein said biasing force overcoming meanscomprises a bell crank means against which said lenses are biased bysaid biasing means, said bell crank means having a predetermined path ofmovement corresponding to a predetermined amount of said lenstranslation required to simultaneously maintain said registration whilesaid magnification is varied.
 11. An attachment in accordance with claim3 wherein said biasing force overcoming means comprises a bell crankmeans against which said lenses are biased by said biasing means, saidbell crank means having a predetermined path of movement correspondingto a predetermined amount of said lens transLation required tosimultaneously maintain said registration while said magnification isvaried.
 12. In a stationary film record projection means for projectingan image stored on a stationary film record on to a display surface, theimprovement comprising means capable of sequentially displaying aplurality of sequential images stored on said stationary film record incontiguous substantially equisize image display areas which are allcontained within a single frame area of said film record which isdivisible into said image display areas and has an associated initialoptical center for purposes of said display, with each of said imagedisplay areas having a different distinct associated initial opticalcenter for purposes of said display which are each equidistant from saidframe area initial optical center, said sequentially displayable imageseach having substantially the same orientation with respect to eachother and said frame area optical center; said means capable ofsequentially displaying a plurality of sequential images stored on saidstationary film record compising a projection lens array having aplurality of projection lenses, each of said projection lenses of saidplurality being aligned with a different corresponding image displayarea, said plurality of lenses being equal in number to said pluralityof image display areas, each of said lenses being capable of projectingan image from said associated image display area; a controllablyrotatable shutter means interposable between said lens array and saidfilm record, said shutter means having an aperture therein substantiallyequal in size to one of said image display areas and being selectivelyregisterable therewith, said shutter means further being capable ofinterposing an opaque mask between said lens array and said other imagedisplay areas for selectively preventing the display of said imagedisplay areas other than the one with which said aperture is selectivelyregisterable; and means for controllably rotating said shutter means forsequentially selectively varying the image display area with which saidaperture is registerable so as to provide said sequential display ofsaid images from said stationary record; said lens array furthercomprising means for simultaneously varying the magnification of saidplurality of lenses and maintaining the registration of each of theplurality of selectively displayable images with respect to a displaysurface for said selected single image, said lens array having alongitudinal axis with said magnification being varied by movement ofsaid lens array with respect to said stationary film record frame alongsaid longitudinal axis, said longitudinal axis being substantiallynormal to said frame area optical center, said magnification varying andregistration maintaining means comprising means for substantiallyequally biasing said lenses in a direction relative to said longitudinalaxis with a predetermined biasing force, said lenses being arrayed aboutsaid longitudinal axis along optical axes associated therewith which aresubstantially parallel to said longitudinal axis, said lens optical axissubstantially intersecting the image display area optical center of thecorresponding image display area at a predetermined position ofmagnification for the corresponding lens and being maintainable in atleast said position and variable therefrom to vary said magnification toanother maintainable position thereof, whereby a plurality of sequentialimages may sequentially be displayed from said film record frame in astationary position thereof.
 13. A projection means in accordance withclaim 12 wherein said lenses biasing means comprises means for equallybiasing said lenses in a direction toward said longitudinal axis with apredetermined biasing force, said lens optical axis substantiallyintersecting the image display area optical center of the correspondingimage display area at one predetermined limit position of magnificationfor the corresponding lens and beiNg maintainable in said position bysaid biasing means.
 14. A projection means in accordance with claim 13wherein said magnification varying and registration maintaining meansfurther comprises means for controllably overcoming said biasing forcefor simultaneously translating said lenses in a direction away from saidlongitudinal axis so as to simultaneously translate said optical axesassociated with said lenses to a different predetermined positionsubstantially parallel to said longitudinal axis and away from saidintersection with the corresponding image display area optical centerwhile maintaining said stationary film record frame in a stationaryposition, whereby said registration of each of said selectivelydisplayable images with respect to said display surface is maintained.15. A projection means in accordance with claim 14 wherein said biasingforce overcoming means comprises a conical wedge having a base and anapex and a longitudinal axis disposable along said lens arraylongitudinal axis with said lenses disposed about said conical wedge andwith said apex disposed in the direction of said film record frameoptical center, said conical wedge having a predetermined slope betweenthe base thereof and the apex thereof corresponding to a predeterminedamount of said lens translation required to simultaneously maintain saidregistration while said magnification is varied, said lenses beingbiased against said conical wedge, the translation of said lensesdeterminable when biased against said base end of said wedge being atanother predetermined limit position of magnification for saidcorresponding lenses while the translation of said lenses determinablewhen biased against said apex end of said wedge being at said onepredetermined limit position of said lens magnification.
 16. Aprojection means in accordance with claim 15 wherein said onepredetermined limit position of said lens magnification is a minimumselected magnification for said lens and said other predetermined limitposition is a maximum selected magnification for said lens, said conicalwedge having an associated radius about said longitudinal axis whichvaries along said longitudinal axis, said associated wedge radius atsaid one predetermined limit position being less than said associatedwedge radius at said other predetermined limit position said lenses eachhaving an associated lens diameter, said diameter being equal, saidlenses being adjacent each other about said wedge at said onepredetermined limit position and spaced apart from each other as saidother predetermined limit position, said wedge slope being defined by anangle of intersection between an outer surface of said wedge againstwhich said lenses are biased and said longitudinal axis, said stationaryfilm record having a first distance from said lens at said onepredetermined limit position, said angle having a tangent defined by thesum of the wedge radius at said one predetermined limit position and theradius of said lens with said sum divided by said first distance.
 17. Aprojection means in accordance with claim 15 wherein said lens array isbiased radially with respect to said longitudinal axis by said wedge assaid lens array moves along said longitudinal axis to vary saidmagnification while said wedge is stationary with respect to saidstationary film record.